Terminal apparatus, base station apparatus, communication method, and integrated circuit

ABSTRACT

An apparatus includes: a transmitter configured to transmit a transport block on PUSCH; and a physical layer processing unit configured to calculate transmit power of the PUSCH, at least based on a number of SC-FDMA symbols N PUSCH-initial   symb  for PUSCH initial transmission for the transport block, wherein the number of the SC-FDMA symbols N PUSCH-initial   symb  is given at least based on N LBT  and a number of SC-FDMA symbols N UL   symb  included in an uplink slot, and a value of N LBT  is 1 in a case that a time continuous signal of a first SC-FDMA symbol included in the PUSCH is generated based on a content of a resource element corresponding to a second SC-FDMA symbol following the first SC-FDMA symbol.

TECHNICAL FIELD

The present invention relates to a terminal apparatus, a base stationapparatus, a communication method, and an integrated circuit.

This application claims priority based on JP 2016-156243 filed on Aug.9, 2016, the contents of which are incorporated herein by reference.

BACKGROUND ART

A radio access method and a radio network for cellular mobilecommunications (hereinafter, referred to as “Long Term Evolution (LTE:Registered Trademark)”, or “Evolved Universal Terrestrial Radio Access(EUTRA)”) have been studied in the 3rd Generation Partnership Project(3GPP). In LTE, a base station apparatus is also referred to as anevolved NodeB (eNodeB), and a terminal apparatus is also referred to asa User Equipment (UE). LTE is a cellular communication system in whichmultiple areas are deployed in a cellular structure, with each of themultiple areas being covered by a base station apparatus. A single basestation apparatus may manage multiple cells.

In LTE release 13, carrier aggregation has been specified which is atechnique that allows a terminal apparatus to perform simultaneoustransmission and/or reception in multiple serving cells (componentcarriers) (NPL 1, 2, and 3). In LTE release 14, extensions of theLicensed Assisted Access (LAA) and carrier aggregation using uplinkcarriers in an unlicensed band have been studied (NPL 4). In NPL 5 thetransmission of HARQ-ACK feedback to the uplink carriers in anunlicensed band on PUSCH, based on a trigger by a base station apparatusis disclosed. In NPL 6, it is disclosed that a part of PUSCH (e.g., ahead symbol of PUSCH) is not transmitted by LBT.

CITATION LIST Non Patent Literature

-   NPL 1: “3GPP TS 36.211 V13.1.0 (2016-03)”, 29 Mar. 2016.-   NPL 2: “3GPP TS 36.212 V13.1.0 (2016-03)”, 29 Mar. 2016.-   NPL 3: “3GPP TS 36.213 V13.1.1 (2016-03)”, 31 Mar. 2016.-   NPL 4: “New Work Item on enhanced LAA for LTE”, RP-152272, Ericsson,    Huawei, 3GPP TSG RAN Meeting #70, Sitges, Spain, 7-10 Dec. 2015.-   NPL 5: “UCI transmission on LAA carrier”, R1-164994, Sharp, 3GPP TSG    RAN1 Meeting #85, Nanjing, China, 23-27 May 2016.-   NPL 6: “Discussion on PUSCH transmission starting within symbol #0”,    R1-164828, Huawei, HiSilicon, 3GPP TSG RAN WG1 Meeting #85, Nanjing,    China, 23-27 May 2016.

SUMMARY OF INVENTION Technical Problem

One aspect of the present invention provides a terminal apparatuscapable of efficiently performing an uplink transmission, acommunication method used for the terminal apparatus, an integratedcircuit mounted on the terminal apparatus, a base station apparatuscapable of efficiently receiving an uplink transmission, a communicationmethod used for the base station apparatus, and an integrated circuitmounted on the base station apparatus.

Solution to Problem

(1) According to some aspects of the present invention, the followingmeasures are provided. Specifically, a first aspect of the presentinvention is a terminal apparatus including: a transmitter configured totransmit a transport block on PUSCH; and a physical layer processingunit configured to calculate transmit power of the PUSCH, at least basedon a number of SC-FDMA symbols N^(PUSCH-initial) _(symb) for PUSCHinitial transmission for the transport block, wherein the number of theSC-FDMA symbols N^(PUSCH-initial) _(symb) is given at least based onN_(LBT) and a number of SC-FDMA symbols N^(UL) _(symb) included in anuplink slot, and a value of N_(LBT) is 1 in a case that a timecontinuous signal of a first SC-FDMA symbol included in the PUSCH isgenerated based on a content of a resource element corresponding to asecond SC-FDMA symbol following the first SC-FDMA symbol.

(2) A second aspect of the present invention is a base station apparatusincluding: a receiver configured to receive a transport blocktransmitted on PUSCH; and a physical layer processing unit configured tocalculate transmit power of the PUSCH, at least based on a number ofSC-FDMA symbols N^(PUSCH-initial) _(symb) for PUSCH initial transmissionfor the transport block, wherein the number of the SC-FDMA symbolsN^(PUSCH-initial) _(symb) is given at least based on N_(LBT) and anumber of SC-FDMA symbols N^(UL) _(symb) included in an uplink slot, anda value of N_(LBT) is 1 in a case that a time continuous signal of afirst SC-FDMA symbol included in the PUSCH is generated based on acontent of a resource element corresponding to a second SC-FDMA symbolfollowing the first SC-FDMA symbol.

(3) A third aspect of the present invention is a communication methodused for a terminal apparatus, the communication method including thesteps of: transmitting a transport block on PUSCH; and calculatingtransmit power of the PUSCH, at least based on a number of SC-FDMAsymbols N^(PUSCH-initial) _(symb) for PUSCH initial transmission for thetransport block, wherein the number of the SC-FDMA symbolsN^(PUSCH-initial) _(symb) is given at least based on N_(LBT) and anumber of SC-FDMA symbols N^(UL) _(symb) included in an uplink slot, anda value of N_(LBT) is 1 in a case that a time continuous signal of afirst SC-FDMA symbol included in the PUSCH is generated based on acontent of a resource element corresponding to a second SC-FDMA symbolfollowing the first SC-FDMA symbol.

(4) A fourth aspect of the present invention is a communication methodused for a base station apparatus, the communication method includingthe steps of: receiving a transport block transmitted on PUSCH; andcalculating transmit power of the PUSCH, at least based on a number ofSC-FDMA symbols N^(PUSCH-initial) _(symb) for PUSCH initial transmissionfor the transport block, wherein the number of the SC-FDMA symbolsN^(PUSCH-initial) _(symb) is given at least based on N_(LBT) and anumber of SC-FDMA symbols N^(UL) _(symb) included in an uplink slot, anda value of N_(LBT) is 1 in a case that a time continuous signal of afirst SC-FDMA symbol included in the PUSCH is generated based on acontent of a resource element corresponding to a second SC-FDMA symbolfollowing the first SC-FDMA symbol.

Advantageous Effects of Invention

According to one aspect of the present invention, a terminal apparatuscan efficiently perform uplink transmission. The base station apparatuscan efficiently receive uplink transmission.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a conceptual diagram of a radio communication system accordingto the present embodiment.

FIG. 2 is a diagram illustrating a schematic configuration of a radioframe according to the present embodiment.

FIG. 3 is a diagram illustrating a schematic configuration of an uplinkslot according to the present embodiment.

FIG. 4 is a schematic block diagram illustrating a configuration of aterminal apparatus 1 according to the present embodiment.

FIG. 5 is a block diagram illustrating an example of a process (transmitprocess 3000) of a baseband unit 13 according to the present embodiment.

FIG. 6 is a schematic block diagram illustrating a configuration of abase station apparatus 3 according to the present embodiment.

FIG. 7 is a diagram illustrating an example of a coding process of anuplink data (a_(x)), a CQI/PMI (o_(x)), an RI (a_(x)), and a HARQ-ACK(a_(x)) according to the present embodiment.

FIG. 8 is the diagram illustrating an example of multiplexing andinterleaving of coded bits according to the present embodiment.

FIG. 9 is a diagram illustrating a first example of PUSCH initialtransmission and initial PDCCH according to the present embodiment.

FIG. 10 is a diagram illustrating a second example of PUSCH initialtransmission and initial PDCCH according to the present embodiment.

FIG. 11 is a diagram illustrating a third example of PUSCH initialtransmission and initial PDCCH according to the present embodiment.

FIG. 12 is a diagram illustrating an example in which a LBT period isincluded in a period where a time continuous signal generated based onSC-FDMA symbol #0 is transmitted.

DESCRIPTION OF EMBODIMENTS

Embodiments of the present invention will be described below. In theembodiments of the present invention, “SC-FDMA symbols beingtransmitted” may mean time continuous signals of the SC-FDMA symbolsbeing transmitted. “SC-FDMA symbols being transmitted” may mean timecontinuous signals generated based on the contents of resource elementscorresponding to the SC-FDMA symbols being transmitted.

FIG. 1 is a conceptual diagram of a radio communication system accordingto the present embodiment. In FIG. 1, the radio communication systemincludes terminal apparatuses 1A to 1C and a base station apparatus 3.Each of the terminal apparatuses 1A to 1C is referred to as a terminalapparatus 1.

Hereinafter, carrier aggregation will be described.

According to the present embodiment, multiple serving cells areconfigured for the terminal apparatus 1. A technology in which theterminal apparatus 1 communicates via the multiple serving cells isreferred to as cell aggregation or carrier aggregation. One aspect ofthe present invention may be applied to each of the multiple servingcells configured for the terminal apparatus 1. One aspect of the presentinvention may be applied to some of the multiple serving cellsconfigured. One aspect of the present invention may be applied to eachof groups of the multiple serving cells configured. One aspect of thepresent invention may be applied to some of groups of the multipleserving cells configured. The multiple serving cells includes at leastone primary cell. The multiple serving cells may include one or multiplesecondary cells. The multiple serving cells may include one or moreLicensed Assisted Access (LAA) cells. An LAA cell is also referred to asa LAA secondary cell.

The primary cell is a serving cell in which an initial connectionestablishment procedure has been performed, a serving cell in which aconnection re-establishment procedure has been started, or a cellindicated as a primary cell in a handover procedure. The secondarycell(s) and/or LAA cell(s) may be configured at a point of time when orafter a Radio Resource Control (RRC) connection is established. Theprimary cell may be included in a licensed band. The LAA cell(s) may beincluded in an unlicensed band. The secondary cell(s) may be included ineither a licensed band or an unlicensed band. The LAA cell may bereferred to as a LAA secondary cell.

A carrier corresponding to a serving cell in the downlink is referred toas a downlink component carrier. A carrier corresponding to a servingcell in the uplink is referred to as an uplink component carrier. Thedownlink component carrier and the uplink component carrier arecollectively referred to as a component carrier.

The terminal apparatus 1 can perform simultaneous transmission and/orreception on multiple physical channels in multiple serving cells(component carriers). A single physical channel is transmitted in asingle serving cell (component carrier) out of the multiple servingcells (component carriers).

Physical channels and physical signals according to the presentembodiment will be described.

In FIG. 1, in uplink radio communication from the terminal apparatus 1to the base station apparatus 3, the following uplink physical channelsare used. The uplink physical channels are used for transmittinginformation output from a higher layer.

-   -   Physical Uplink Shared Channel (PUSCH)    -   Physical Random Access Channel (PRACH)

The PUSCH is used for transmitting uplink data (Transport block,Uplink-Shared Channel (UL-SCH)), the Channel State Information (CSI) ofdownlink, and/or the Hybrid Automatic Repeat reQuest (HARQ-ACK). TheCSI, as well as the HARQ-ACK, is Uplink Control Information (UCI).

The CSI includes a Channel Quality Indicator (CQI), a Rank Indicator(RI), and a Precoding Matrix Indicator (PMI). The CQI expresses acombination of a modulation scheme and a coding rate for a singletransport block to be transmitted on the PDSCH. The RI indicates thenumber of valid layers determined by the terminal apparatus 1. The PMIindicates a code book determined by the terminal apparatus 1. The codebook is associated with precoding of PDSCH.

The HARQ-ACK corresponds to downlink data (Transport block, MediumAccess Control Protocol Data Unit: MAC PDU, Downlink-Shared Channel:DL-SCH, Physical Downlink Shared Channel: PDSCH). The HARQ-ACK indicatesan acknowledgement (ACK) or a negative-acknowledgement (NACK). TheHARQ-ACK is also referred to as ACK/NACK, HARQ feedback, HARQacknowledge, HARQ information, or HARQ control information.

The PRACH is used to transmit a random access preamble.

In FIG. 1, the following uplink physical signal is used in the uplinkradio communication. The uplink physical signal is not used fortransmitting information output from the higher layer, but is used bythe physical layer.

Demodulation Reference Signal (DMRS)

The DMRS is associated with transmission of the PUSCH. The DMRS istime-multiplexed with the PUSCH. The base station apparatus 3 may usethe DMRS in order to perform channel compensation of the PUSCH.

In FIG. 1, the following downlink physical channels are used fordownlink radio communication from the base station apparatus 3 to theterminal apparatus 1. The downlink physical channels are used fortransmitting information output from the higher layer.

Physical Downlink Control Channel (PDCCH)

The PDCCH is used to transmit Downlink Control Information (DCI). Thedownlink control information is also referred to as DCI format. Thedownlink control information includes an uplink grant. The uplink grantmay be used for scheduling a single PUSCH within a single cell. Theuplink grant may be used for scheduling multiple PUSCHs in consecutivesubframes within a single cell. The uplink grant may be used forscheduling of a single PUSCH within the fourth or later subframe fromthe subframe in which the uplink grant is transmitted.

In one aspect of the present invention, the DCI used for scheduling aPUSCH (or a subframe) may include information indicating that a part oftime continuous signals of a SC-FDMA symbol included in the PUSCH is nottransmitted. For example, the information indicating that a part of timecontinuous signals of a SC-FDMA symbol included in the PUSCH is nottransmitted may be information indicating a SC-FDMA symbol (Startingsymbol) that starts the transmission. For example, the informationindicating that a part of time continuous signals of a SC-FDMA symbolincluded in the PUSCH is not transmitted may be information indicating atransmission ending symbol.

For example, the information indicating that a part of time continuoussignals of a SC-FDMA symbol included in the PUSCH is not transmitted maybe information indicating that dummy signals are transmitted in some ofthe time continuous signals of some SC-FDMA symbols included in thePUSCHs. For example, the dummy signals may be extended Cyclic Prefixes(CPs) of the SC-FDMA symbol following a part of SC-FDMA symbols includedin the PUSCHs, or time continuous signals generated based on thecontents of resource elements corresponding to the SC-FDMA symbolfollowing a part of SC-FDMA symbols included in the PUSCHs.

In one aspect of the present invention, the DCI used for scheduling onePUSCH (one subframe) is also referred to as DCI format 0A or DCI format4A.

In one aspect of the present invention, the DCI used for schedulingmultiple PUSCHs (multiple subframes) is also referred to as DCI format0B or DCI format 4B. DCI format 0B and DCI format 4B are alsocollectively referred to as DCI type B.

DCI type B may be used for scheduling multiple consecutive PUSCHs. In acase that the DCI type B schedules multiple PUSCHs, the informationincluded in the DCI and indicating that some SC-FDMA symbols included inthe PUSCHs are not transmitted may be applied only to some of themultiple the PUSCHs.

The UL-SCH is a transport channel. A channel used in a Medium AccessControl (MAC) layer is referred to as a transport channel. A unit of thetransport channel used in the MAC layer is also referred to as atransport block (TB) or a MAC Protocol Data Unit (PDU).

A configuration of the radio frame according to the present embodimentwill be described below.

FIG. 2 is a diagram illustrating a schematic configuration of a radioframe according to the present embodiment. In FIG. 2, the horizontalaxis is a time axis. Each of the radio frames is 10 ms in length. Eachof the radio frames is constituted of 10 subframes. Each of thesubframes is 1 ms in length and is defined by two consecutive slots.Each of the slots is 0.5 ms in length. The i-th subframe within a radioframe is constituted of the (2×i)-th slot and the (2×i+1)-th slot. To bemore precise, 10 subframes are available in each 10 ms interval.

An example configuration of a slot according to the present embodimentwill be described below. FIG. 3 is a diagram illustrating a schematicconfiguration of an uplink slot according to the present embodiment.FIG. 3 illustrates a configuration of an uplink slot in a cell. In FIG.3, the horizontal axis is a time axis, and the vertical axis is afrequency axis. In FIG. 3, l is an SC-FDMA symbol number/index, and k isa subcarrier number/index.

The physical signal or the physical channel transmitted in each of theslots is expressed by a resource grid. In uplink, the resource grid isdefined by multiple subcarriers and multiple SC-FDMA symbols. Eachelement within the resource grid is referred to as a resource element.The resource element is expressed by a subcarrier number/index k and anSC-FDMA symbol number/index 1.

The uplink slot includes multiple SC-FDMA symbols l (l=0, 1, . . . ,N^(UL) _(symb)) in the time domain. N^(UL) _(symb) indicates the numberof SC-FDMA symbols included in one uplink slot. For a normal CyclicPrefix (CP) in the uplink, N^(UL) _(symb) is 7. For an extended CP inthe uplink, N^(UL) _(symb) is 6.

The terminal apparatus 1 receives the parameter UL-CyclicPrefixLengthindicating the CP length in the uplink from the base station apparatus3. The base station apparatus 3 may broadcast, in the cell, systeminformation including the parameter UL-CyclicPrefixLength correspondingto the cell.

The uplink slot includes the multiple subcarriers k (k=0, 1, . . . ,N^(UL) _(RB)×N^(RB) _(SC)) in the frequency domain. N^(UL) _(RB) is anuplink bandwidth configuration for the serving cell expressed by amultiple of N^(RB) _(SC). N^(RB) _(sc) is the (physical) resource blocksize in the frequency domain expressed by the number of subcarriers. Thesubcarrier spacing Δf may be 15 kHz, and N^(RB) _(sc) may be 12. Thus,N^(RB) _(sc) may be 180 kHz.

A resource block (RB) is used to express mapping of a physical channelto resource elements. For the resource block, a virtual resource block(VRB) and a physical resource block (PRB) are defined. A physicalchannel is first mapped to a virtual resource block. Thereafter, thevirtual resource block is mapped to the physical resource block. Onephysical resource block is defined by N^(UL) _(symb) consecutive SC-FDMAsymbols in the time domain and by N^(RB) _(sc) consecutive subcarriersin the frequency domain. Hence, one physical resource block isconstituted by (N^(UL) _(symb)×N^(RB) _(SC)) resource elements. Onephysical resource block corresponds to one slot in the time domain. Thephysical resource blocks are numbered n_(PRB) (0, 1, . . . , N^(UL)_(RB)−1) in ascending order of frequencies in the frequency domain.

The downlink slot according to the present embodiment includes multipleOFDM symbols. Since the configuration of the downlink slot according tothe present embodiment is basically the same except that a resource gridis defined by multiple subcarriers and multiple OFDM symbols, thedescription of the configuration of the downlink slot will be omitted.

Configurations of apparatuses according to the present embodiment willbe described below.

FIG. 4 is a schematic block diagram illustrating a configuration of theterminal apparatus 1 according to the present embodiment. Asillustrated, the terminal apparatus 1 is configured to include a radiotransmission and/or reception unit 10 and a higher layer processing unit14. The radio transmission and/or reception unit 10 is configured toinclude an antenna unit 11, a Radio Frequency (RF) unit 12, and abaseband unit 13. The higher layer processing unit 14 is configured toinclude a medium access control layer processing unit 15 and a radioresource control layer processing unit 16. The radio transmission and/orreception unit 10 is also referred to as a transmitter, a receiver or aphysical layer processing unit.

The higher layer processing unit 14 outputs uplink data (transportblock) generated by a user operation or the like, to the radiotransmission and/or reception unit 10. The higher layer processing unit14 performs processing of the Medium Access Control (MAC) layer, thePacket Data Convergence Protocol (PDCP) layer, the Radio Link Control(RLC) layer, and the Radio Resource Control (RRC) layer.

The medium access control layer processing unit 15 included in thehigher layer processing unit 14 performs processing of the Medium AccessControl layer. The medium access control layer processing unit 15controls random access procedure in accordance with the variousconfiguration information/parameters managed by the radio resourcecontrol layer processing unit 16.

The radio resource control layer processing unit 16 included in thehigher layer processing unit 14 performs processing of the RadioResource Control layer. The radio resource control layer processing unit16 manages various types of configuration information/parameters of itsown apparatus. The radio resource control layer processing unit 16 setsvarious types of configuration information/parameters, based on higherlayer signaling received from the base station apparatus 3. Namely, theradio resource control unit 16 sets the various configurationinformation/parameters in accordance with the information indicating thevarious configuration information/parameters received from the basestation apparatus 3. The radio resource control layer processing unit 36generates uplink data (transport block) allocated on a PUSCH, an RRCmessage, a MAC Control Element (CE), and the like, and outputs thegenerated data to the radio transmission and/or reception unit 30.

The radio transmission and/or reception unit 10 performs processing ofthe physical layer, such as modulation, demodulation, coding, decoding,and the like. The radio transmission and/or reception unit 10demultiplexes, demodulates, and decodes a signal received from the basestation apparatus 3, and outputs the information resulting from thedecoding to the higher layer processing unit 14. The radio transmissionand/or reception unit 10 generates a transmit signal by modulating andcoding data, and performs transmission to the base station apparatus 3.

The RF unit 12 converts (down-converts) a signal received via theantenna unit 11 into a baseband signal by orthogonal demodulation andremoves unnecessary frequency components. The RF unit 12 outputs theprocessed analog signal to the baseband unit.

The baseband unit 13 converts the analog signal input from the RF unit12 into a digital signal. The baseband unit 13 removes a portioncorresponding to a Cyclic Prefix (CP) from the digital signal resultingfrom the conversion, performs Fast Fourier Transform (FFT) of the signalfrom which the CP has been removed, and extracts a signal in thefrequency domain.

The baseband unit 13 performs Inverse Fast Fourier Transform (IFFT) ofthe data, generates a time signal of an SC-FDMA symbol including the CP,generates a digital signal of the baseband, and converts the digitalsignal of the baseband into an analog signal. The baseband unit 13outputs the analog signal resulting from the conversion, to the RF unit12.

FIG. 5 is a block diagram illustrating an example of a process (transmitprocess 3000) of a baseband unit 13. Transmission process 3000 is aconfiguration including at least one of a coding (coding processingunit) 3001, a Scrambling (scrambling processing unit) 3002, a Modulationmapper 3003, a Layer mapper 3004, a Transform precoder 3005, a Precoder3006, a Resource element mapper 3007, an OFDM baseband signal generation(OFDM baseband signal generation processing unit) 3008.

The Coding 3001 includes a function to code transport block or uplinkcontrol information by error correction coding process (turbo codingprocess, Tail Biting Convolutional Code (TBCC) coding process oriteration code, and the like) and to generate coded bits. The generatedcoded bits are input into the Scrambling 3002.

The Scrambling 3002 includes a function to convert coded bits intoscrambled bits by a scrambling process. The scrambled bits are inputinto the Modulation mapper 3003.

The Modulation mapper 3003 includes a function to convert the scrambledbit into modulation bits by a modulation mapping process. The modulationbits are obtained by performing modulation processes such as QuaderaturePhase Shift Keying (QPSK), Quaderature Amplitude Modulation (16QAM),64QAM, 256QAM, and the like, to the scrambled bits. Here, the modulationbit is also referred to as a modulation symbol. The modulation bits areinput into the Layer mapper 3004.

The Layer mapper 3004 includes a function to map (layer-map) modulationsymbols onto each layer. The layer is the index with respect to themultiplicity of a physical layer signal in the spatial domain. That is,for example, in a case that the number of the layers is 1, it means thatspatial multiplexing is not performed. In a case that the number of thelayers is 2, it means that two kinds of physical layer signals arespatially multiplexed. The layer-mapped modulation symbols (hereafter,the layer-mapped modulation symbol is also referred to as a modulationsymbol) are input to the Transform precoder 3005.

The Transform precoder 3005 includes a function to generate complexsymbols, based on the modulation symbols and/or NULL signals. A functionto generate complex symbols, based on the modulation symbols and/or NULLsignals in the Transform precoder 3005 is given by the followingEquation (7).

$\begin{matrix}{{{y^{(\lambda)}\left( {{l \cdot M_{sc}^{PUSCH}} + k} \right)} = {\frac{1}{\sqrt{M_{sc}^{PUSCH}}}{\sum\limits_{i = 0}^{M_{sc}^{PUSCH} - 1}{{x^{(\lambda)}\left( {{l \cdot M_{sc}^{PUSCH}} + i} \right)}e^{{- j}\frac{2\pi \; {ik}}{M_{sc}^{PUSCH}}}}}}}\mspace{79mu} {{k = 0},\ldots \mspace{14mu},{M_{sc}^{PUSCH} - 1}}\mspace{79mu} {{l = 0},\ldots \mspace{14mu},{{M_{symb}^{layer}/M_{sc}^{PUSCH}} - 1}}} & {{Equation}\mspace{14mu} (1)}\end{matrix}$

In Equation (1), λ is the index of the layer, M^(PUSCH) _(SC) is thenumber of subcarriers in the bandwidth of the scheduled PUSCH, x^((λ))is the modulation symbol in the layer index λ, i is the index of themodulation symbol, j is an imaginary unit, M^(layer) _(PUSCH) is thenumber of modulation symbols per layer, and π is the circumferenceratio.

Some of x^((λ)) may be NULL. Here, some of x^((λ)) being NULL may meanthat zero (a complex number or an actual number) is substituted for someof x^((λ)). For example, in a case that the modulation symbol generatedby the Layer mapper 3004 or the Modulation mapper 3003 is x^((λ)) ₀, itmay be x^((λ))=[O_(m), x^((λ)) ₀]. Here, O_(m) may be a sequenceconstituted of one or multiple zeros. Here, [A, B] is an operation tooutput the sequence where the sequence A and the sequence B arecombined. The complex symbols are input into the Precoder 3006.

The Precoder 3006 generates a transmission symbol for every transmitantenna by multiplying a complex symbol by a precoder. The transmissionsymbols are input into the Resource element mapper 3007.

The Resource element mapper 3007 maps the transmission symbol everytransmit antenna port onto a resource element respectively.

The baseband signal generation 3008 includes a function to convert amodulation symbol mapped to a resource element into a baseband signal(time continuous signal). The baseband signal generation 3008 generatesa time continuous signal, based on the contents (e.g., a modulationsymbol) of the resource element corresponding to the SC-FDMA symbol byEquation (2).

$\begin{matrix}{{s_{l}^{(p)}(t)} = {\sum\limits_{k = {- {{floor}{({N_{RB}^{UL}{N_{sc}^{RB}/2}})}}}}^{{{ceil}{({N_{RB}^{UL}{N_{sc}^{RB}/2}})}} - 1}{a_{k^{( - )},l_{second}}^{(p)} \cdot e^{{{j2\pi}{({k + \frac{1}{2}})}}\Delta \; {f{({t - {N_{{CP},l}^{X}T_{s}}})}}}}}} & {{Equation}\mspace{14mu} (2)}\end{matrix}$

Here, s^((p)) _(l) is a time continuous signal at the time t of theSC-FDMA symbol l, generated based on contents corresponding to theSC-FDMA symbol l_(second), at the antenna port p. N^(UL) _(RB) is thenumber of the resource blocks of the uplink band, N^(RB) _(sc) is thenumber of the subcarrier of the resource block, ceil ( ) is a ceilingfunction, floor ( ) is a floor function, a^((p)) _(k) ⁽⁻⁾ _(,l) iscontents of the resource element (k, l) at the antenna port p, andl_(second) is the index of the SC-FDMA symbol. In addition, Δf=15 kHz.In addition, N_(CP,l) is the CP length of the SC-FDMA symbol l. Inaddition, T_(s)=1/(15,000*2,048). The time t includes a value within therange from T_(1,0) to (N_(CP,l)+N)*T_(s). Here, T_(1,0) is the time whentransmission of the SC-FDMA symbol is started. For example, it may beT_(1,0)=0. In addition, N^(X) _(CP,l) is a parameter of time continuoussignal generation of the SC-FDMA symbol, for example, it may be N^(X)_(CP,l)=N_(CP,l).

N_(CP,l) may be 160 in a case that l=0 in a normal CP. N_(CP,l) may be144 in a case that l=1 to 6 in a normal CP. N_(CP,l) may be 512 in acase that l=0 to 5 in an extended CP.

The RF unit 12 removes unnecessary frequency components from the analogsignal input from the baseband unit 13 using a low-pass filter,up-converts the analog signal into a signal of a carrier frequency, andtransmits the up converted signal via the antenna unit 11. Furthermore,the RF unit 12 amplifies power. Furthermore, the RF unit 12 may have afunction of controlling transmit power. The RF unit 12 is also referredto as a transmit power control unit.

FIG. 6 is a schematic block diagram illustrating a configuration of thebase station apparatus 3 according to the present embodiment. Asillustrated, the base station apparatus 3 is configured to include aradio transmission and/or reception unit 30 and a higher layerprocessing unit 34. The radio transmission and/or reception unit 30 isconfigured to include an antenna unit 31, an RF unit 32, and a basebandunit 33. The higher layer processing unit 34 is configured to include amedium access control layer processing unit 35 and a radio resourcecontrol layer processing unit 36. The radio transmission and/orreception unit 30 is also referred to as a transmitter, a receiver or aphysical layer processing unit.

The higher layer processing unit 34 performs processing of the MediumAccess Control (MAC) layer, the Packet Data Convergence Protocol (PDCP)layer, the Radio Link Control (RLC) layer, and the Radio ResourceControl (RRC) layer.

The medium access control layer processing unit 35 included in thehigher layer processing unit 34 performs processing of the Medium AccessControl layer. The radio resource control layer processing unit 36included in the higher layer processing unit 34 performs processing ofthe Radio Resource Control layer. The radio resource control layerprocessing unit 36 generates, or acquires from a higher node, downlinkdata (transport block) allocated on a PDSCH, system information, an RRCmessage, a MAC Control Element (CE), and the like, and performs outputto the radio transmission and/or reception unit 30. Furthermore, theradio resource control layer processing unit 36 manages various types ofconfiguration information/parameters for each of the terminalapparatuses 1. The radio resource control layer processing unit 36 mayset various types of configuration information/parameters for each ofthe terminal apparatuses 1 via the higher layer signal. Namely, theradio resource control layer processing unit 36 transmits/broadcastsinformation indicating various types of configurationinformation/parameters.

The functionality of the radio transmission and/or reception unit 30 issimilar to the functionality of the radio transmission and/or receptionunit 10, and hence description thereof is omitted.

Each of the units having the reference signs 10 to 16 included in theterminal apparatus 1 may be configured as a circuit. Each of the unitshaving the reference signs 30 to 36 included in the base stationapparatus 3 may be configured as a circuit.

In the present embodiment, a group of multiple LAA cells is referred toas a UCI cell group. The HARQ-ACK corresponding to the multiple LAAcells included in the UCI cell group may be transmitted on a PUSCH inone or more LAA cells in the UCI cell group.

The UCI cell group does not always include a primary cell. The basestation apparatus 3 may determine whether the UCI cell group includes aLAA cell. The base station apparatus 3 may transmit information/higherlayer parameter indicating whether the UCI group includes a LAA cell tothe terminal apparatus 1.

A CSI request and a HARQ-ACK request may be included in the uplink grantcorresponding to the LAA cell included in the UCI cell group. The fieldmapped to the bits of the CSI request is also referred to as a CSIrequest field. The field mapped to the bits of the HARQ-ACK request isalso referred to as a HARQ-ACK request field.

In a case that the HARQ-ACK request field included in the uplink grantcorresponding to the LAA cell included in the UCI cell group is set totrigger HARQ-ACK transmission, the terminal apparatus 1 transmits theHARQ-ACK using PUSCH in the LAA cell. For example, the transmission ofHARQ-ACK may not be triggered in a case that 1 bit of the HARQ-ACKrequest field is set to be ‘0’. For example, the transmission ofHARQ-ACK may be triggered in a case that 1 bit of the HARQ-ACK requestfield is set to be ‘1’.

In a case that the CSI request field included in the uplink grantcorresponding to the LAA cell included in the UCI cell group is set totrigger CSI reporting, the terminal apparatus 1 performs CSI reportingusing PUSCH in the LAA cell. For example, the CSI reporting may not betriggered in a case that 2 bits of the CSI request field is set to be‘00’. For example, the CSI reporting may be triggered in a case that 2bits of the CSI request field is set to be a value except ‘00’.

A coding process of an uplink data (a_(x)), a CQI/PMI (o_(x)), an RI(b_(x)), and a HARQ-ACK (c_(x)) transmitted using PUSCH will bedescribed below.

FIG. 7 is a diagram illustrating an example of a coding process of theuplink data (a_(x)), the CQI/PMI (o_(x)), the RI (b_(x)), and theHARQ-ACK (c_(x)) according to the present embodiment. The uplink data,the CQI/PMI, the RI, and the HARQ-ACK transmitted using PUSCH are codedin 600 to 603 in FIG. 7 individually. Coded bits of the uplink data(f_(x)), coded bits of the CQI/PMI (q_(x)), coded bits of the RI(g_(x)), and coded bits of the HARQ-ACK (h_(x)) are multiplexed andinterleaved in 604 in FIG. 7. A baseband signal (a signal of PUSCH) isgenerated in 605 in FIG. 7 from the coded bits multiplexed andinterleaved in 604.

A matrix may be used for multiplexing and interleaving the coded bits.The column of the matrix corresponds to the SC-FDMA symbol. One elementof the matrix corresponds to one coding modulation symbol. The codingmodulation symbol is a group of X coded bits. X is the modulation order(Q_(m)) corresponding to the PUSCH (uplink data). One complex numbersymbol is generated from one coding modulation symbol. Multiple complexnumber symbols generated from multiple coding modulation symbols mappedto one column are assigned to the PUSCH and mapped to the subcarrierafter DFT precoding.

FIG. 8 is the diagram illustrating an example of multiplexing andinterleaving of coded bits according to the present embodiment. In acase that the HARQ-ACK and the RI are transmitted using PUSCH, thecoding modulation symbols of the HARQ-ACK are mapped to columns ofindexes {2, 3, 8, 9}, and in addition, the coding modulation symbols ofthe RI are mapped to columns of indexes {1, 4, 7, 10}.

The columns of indexes {2, 3, 8, 9} correspond to the SC-FDMA symbolnext to the SC-FDMA symbol where the DMRS associated with the PUSCHtransmission is transmitted. The DMRS is transmitted in the SC-FDMAsymbol between the SC-FDMA symbol corresponding to the column of index 2and the SC-FDMA symbol corresponding to the column of index 3. The DMRSis transmitted in the SC-FDMA symbol between the SC-FDMA symbolcorresponding to the column of index 8 and the SC-FDMA symbolcorresponding to the column of index 9. The columns of indexes {1, 4, 7,10} corresponds to the SC-FDMA symbol 2 symbols away from the SC-FDMAsymbol where the DMRS associated with the PUSCH transmission istransmitted.

A calculation method of the number of coded bits of the RI (G) and thenumber of coded bits of the HARQ-ACK (H) will be described below. Thenumber of coded bits of the RI (G) and the number of coded bits of theHARQ-ACK (H) may be given by following Equation (3) and Equation (4).Note that the present embodiment may be applied to the CQI/PMI.

For RI, G=

_(m)×

′

For HARQ-ACK, H=

_(m)×

′  Equation (3)

where

-   -   _(m) is the modulation order of a given transport block.

$\begin{matrix}{Q^{\prime} = {\min\left\lbrack {{{ceil}\left( \frac{\begin{matrix}{\left( {O + L} \right) \cdot M_{sc}^{{PUSCH}\text{-}{Initial}} \cdot} \\{N_{symb}^{{PUSCH}\text{-}{Initial}} \cdot \beta_{offset}^{PUSCH}}\end{matrix}}{\sum\limits_{r = 0}^{C - 1}K_{r}} \right)},{4 \cdot M_{sc}^{PUSCH}}} \right\rbrack}} & {{Equation}\mspace{14mu} (4)}\end{matrix}$

where

-   -   O is the number of RI bits or HARQ-ACK bits, and    -   L is the number of CRC parity bits given by

$L = \left\{ {\begin{matrix}0 & {O \leq 22} \\8 & {otherwise}\end{matrix},} \right.$

and

-   -   M_(sc) ^(PUSCH) is the scheduled bandwidth for PUSCH        transmission in the current subframe for the transport block,        expressed as a number of subcarriers, and    -   M_(sc) ^(PUSCH-initial) is the scheduled bandwidth for initial        PUSCH transmission and obtained from the initial PDCCH for the        same transport block, and    -   N_(symb) ^(PUSCH-initial) is the number of SC-FDMA symbols per        subframe for initial PUSCH transmission for the same transport        block, and    -   C, and K_(r) are obtained from the initial PDCCH for the same        transport block, and    -   For RI, β_(offset) ^(PUSCH)=β_(offset) ^(RI), and    -   For HARQ-ACK, β_(offset) ^(PUSCH)=β_(offset) ^(HARQ-ACK).

min ( ) is a function to return the smallest value among the multipleinput values. ceil ( ) is a function to return the smallest integer thatis bigger than the input value. O is the number of bits of the RI or thenumber of bits of the HARQ-ACK. L is the number of CRC parity bits addedto the RI or the HARQ-ACK. C is the number of code blocks. K_(r) is thesize of the code block r. Multiple code blocks are given by dividing onetransport block.

M^(PUSCH-initial) _(sc) is the bandwidth scheduled for the PUSCH initialtransmission, and is obtained from the initial PDCCH for the sametransport block. M^(PUSCH-initial) _(sc) may be expressed by the numberof subcarriers. N^(PUSCH-initial) _(symbol) is the number of SC-FDMAsymbols for the PUSCH initial transmission for the same transport block.Here, the same transport block is a transport block transmitted on thePUSCH with the UCI.

β^(RI) _(offset) may be given at least based on some or all of thefollowing elements (1) to (5).

Element (1): whether the serving cell where the PUSCH is transmittedbelongs to the UCI cell group

Element (2): whether the HARQ-ACK transmission is performed using thePUSCH

Element (3): the value of the HARQ-ACK request field

Element (4): the number of the SC-FDMA symbols for the PUSCH

Element (5): the column to which coding modulation symbols of the RI aremapped (the SC-FDMA symbol where the RI is transmitted)

β^(RI) _(offset) may be given by information/parameter received from thebase station apparatus 3. The terminal apparatus may select one from themultiple β^(RI) _(offset) given by information/parameter received fromthe base station apparatus 3, at least based on some or all of theelement (1) to (5) above.

β^(HARQ-ACK) _(offset) may be given at least based on some or all of theelements (1) to (5).

β^(HARQ-ACK) _(offset) may be given by information/parameter receivedfrom the base station apparatus 3. β^(HARQ-ACK) _(offset) may be givenregardless of element (1) above.

In calculation of the number of CQI/PMI bits, β^(CQI) _(offset) may begiven at least based on some or all of the elements (1) to (5).

β^(CQI) _(offset) may be given by information/parameter received fromthe base station apparatus 3.

A setting method of the transmit power P_(PUSCH,c) (i) for the PUSCHtransmission in subframe i in the serving cell c will be described asfollow. The transmit power P_(PUSCH,c) (i) may be given by the followingEquation (5).

$\begin{matrix}{{P_{{PUSCH},c}(i)} = {\min {\begin{Bmatrix}{{P_{{CMAX},c}(i)},} \\\begin{matrix}{{10{\log_{10}\left( {M_{{PUSCH},c}(i)} \right)}} + {P_{{O\_ {PUSCH}},c}(j)} +} \\{{{\alpha_{c}(j)} \cdot {PL}_{c}} + {\Delta_{{TF},c}(i)} + {f_{c}(t)}}\end{matrix}\end{Bmatrix}\left\lbrack {{dB}\; m} \right\rbrack}}} & {{Equation}\mspace{14mu} (5)}\end{matrix}$

where,

-   -   P_(CMAX,c)(i) is the configured UE transmit power in subframe i        for serving cell c.    -   M_(PUSCH,c)(i) is the bandwidth of the PUSCH resource assignment        expressed in number of resource blocks valid for subframe i and        serving cell c.    -   P_(O) _(_) _(PUSCH,c)(j) is a parameter composed of the sum of a        component P_(O) _(_) _(NOMINAL) _(_) _(PUSCH,c)(j) provided from        higher layers and a component P_(O) _(_) _(UE) _(_)        _(PUSCH,c)(j) provided by higher layers for serving cell c.    -   α_(c) ϵ{0, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1} is a 3-bit parameter        provided by higher layers for serving cell c.    -   PL_(c) is the downlink path loss estimate calculated in the UE        for serving cell c in dB.    -   f_(c)(i) is derived from a TPC command which is included in        PDCCH/EPDCCH with DCI format for serving cell c.

P_(CMAX,c) (i) is the maximum transmit power configured for the terminalapparatus 1 in subframe i in the serving cell c. M_(PUSCH,c) (i) is abandwidth of PUSCH resource allocation in subframe i in the serving cellc. The PUSCH resource allocation bandwidth is expressed by the number ofresource blocks. P_(O PUSCH,c) (j) is given based on two parametersprovided by the higher layer. α_(c) is given by a parameter given by thehigher layer. PL_(c) is the downlink path loss estimate for the servingcell c calculated by the terminal apparatus 1. f_(c) (i) is derived by aTPC command. The TPC command may be included in the DCI format for theserving cell c. Δ_(TF,c) in Equation (5) may be given by the followingEquation (6).

$\begin{matrix}{{\Delta_{{TF},c}(i)} = \left\{ \begin{matrix}{{0\mspace{14mu} {for}\mspace{14mu} K_{s}} = 0} & \; \\{10{\log_{10}\left( {\left( {2^{{BPRE} - K_{s}} - 1} \right) \cdot \beta_{offset}^{PUSCH}} \right)}} & {{{for}\mspace{14mu} K_{s}} = 1.25}\end{matrix} \right.} & {{Equation}\mspace{14mu} (6)}\end{matrix}$

where

-   -   K_(S) is given by the parameter deltaMCS-Enabled provided by        higher layers for each serving cell c.    -   β_(offset) ^(PUSCH)=/β_(offset) ^(CQI) for control data (UCI)        sent via PUSCH without UL-SCH data (transport block) and 1 for        other cases.

K_(s) is given by a parameter provided by the higher layer. In a casethat the UCI is transmitted via the PUSCH which does not include atransport block, β^(PUSCH) _(offset) is given by β^(CQI) _(offset).β^(CQI) _(offset) may be given by information/parameter received fromthe base station apparatus 3. β^(CQI) _(offset) may be given regardlessof element (1) above. In a case that at least a transport block istransmitted via the PUSCH, β^(PUSCH) _(offset) is 1. The BPRE inEquation (6) is given by the following Equation (7).

$\begin{matrix}{{BPRE} = \left\{ \begin{matrix}{O_{CQI}/N_{RE}} & {{{for}\mspace{14mu} {control}\mspace{14mu} {data}\mspace{14mu} ({UCI})\mspace{14mu} {sent}\mspace{14mu} {via}\mspace{14mu} {PUSCH}}\mspace{20mu}} \\\; & {{{without}\mspace{14mu} {UL}\text{-}{SCH}\mspace{14mu} {data}\mspace{14mu} \left( {{transport}\mspace{11mu} {block}} \right)}\mspace{11mu}} \\{\sum\limits_{r = 0}^{C - 1}{K_{r}/N_{RE}}} & {{for}\mspace{14mu} {other}\mspace{14mu} {case}}\end{matrix} \right.} & {{Equation}\mspace{14mu} (7)}\end{matrix}$

where

-   -   C, and K_(r) are obtained from the initial PDCCH for the same        transport block, and    -   O_(CQI) is the number of CQI/PMI bits including CRC parity bits.    -   N_(RE) is the number of resource elements determined as        N_(RE)=M_(sc) ^(PUSCH-initial)·N_(symb) ^(PUSCH-initial).

O_(CQI) is the number of bits of the CQI/PMI including the CRC paritybits. N_(RE) is the number of resource elements. N_(RE) is the productof M^(PUSCH-initial) _(sc) and N^(PUSCH-initial) _(symbol). Thus, thetransmit power P_(PUSCH,c) (i) for the PUSCH transmission is given basedon M^(PUSCH-initial) _(sc) and N^(PUSCH-initial) _(symbol).

FIG. 9 is a diagram illustrating PUSCH initial transmission and thefirst example of initial PDCCH according to the present embodiment. Theterminal apparatus 1 receives PDCCH 800 including an uplink grantindicating initial transmission. PDCCH 800 is also referred to asinitial PDCCH 800. The terminal apparatus 1 transmits PUSCH 802including the transport block x, based on detection of PDCCH 800. PUSCH802 is also referred to as initial transmission PUSCH. The terminalapparatus 1 receives PDCCH 804 including an uplink grant indicatingretransmission. Here, the CSI request field included in the uplink grantof PDCCH 804 may be set to trigger CSI reporting. The HARQ-ACK requestfield included in the uplink grant of PDCCH 804 may be set to triggerHARQ-ACK transmission. The terminal apparatus 1 transmits PUSCH 806including the UCI (the CQI/PMI, the RI, and/or the HARQ-ACK) and thesame transport block x, based on detection of PDCCH 804. PUSCH 806 isalso referred to as retransmission PUSCH 806. PUSCH 806 corresponds toretransmission of the initial transmission PUSCH 802. Here, PDCCH 800,804 and PUSCH 802, 806 correspond to the same HARQ process.

In FIG. 9, the number of coded bits Q of the CQI/PMI, the number ofcoded bits G of the RI, the number of coded bits H of the HARQ-ACK, andthe transmit power for PUSCH 806, P_(PUSCH,c) (i) are the bandwidthscheduled for PUSCH 802, and are given at least based onM^(PUSCH-initial) _(sc) obtained from PDCCH 800 and the number of theSC-FDMA symbols for PUSCH 802 for the same transport block x,N^(PUSCH-initial) _(symbol).

FIG. 10 is a diagram illustrating PUSCH initial transmission and thesecond example of initial PDCCH according to the present embodiment. Thebase station apparatus 3 transmits PDCCH 900 including an uplink grantindicating initial transmission. However, the terminal apparatus 1 doesnot transmit PUSCH 902 corresponding to PDCCH 900 by failing indetection of PDCCH 900. PDCCH 900 is also referred to as initial PDCCH900. The terminal apparatus 1 receives PDCCH 904 including an uplinkgrant indicating transmission. The terminal apparatus 1 transmits PUSCH906 including the transport block x, based on detection of PDCCH 904.PUSCH 906 is also referred to as retransmission PUSCH 906. PUSCH 906corresponds to retransmission of PUSCH 902. The terminal apparatus 1receives PDCCH 908 including an uplink grant indicating transmission.Here, the CSI request field included in the uplink grant of PDCCH 908may be set to trigger CSI reporting. The HARQ-ACK request field includedin the uplink grant of PDCCH 908 may be set to trigger HARQ-ACKtransmission. The terminal apparatus 1 transmits PUSCH 910 including theUCI (the CQI/PMI, the RI, and/or the HARQ-ACK) and the transport blockx, based on detection of PDCCH 908. PUSCH 910 is also referred to asretransmission PUSCH 910. PUSCH 910 corresponds to retransmission ofPUSCH 902 and/or PUSCH 906. Here, PDCCH 900, 904, 908 and PUSCH 902,906, 910 correspond to the same HARQ process.

In FIG. 10, in a case that PUSCH 902 based on PDCCH 900 is nottransmitted, the number of coded bits Q of the CQI/PMI, the number ofcoded bits G of the RI, the number of coded bits H of the HARQ-ACK, andthe transmit power for PUSCH 910, P_(PUSCH,c) (i) are the bandwidthscheduled for PUSCH 906, and are given at least based onM^(PUSCH-initial) _(sc) obtained from initial PDCCH 904 and the numberof the SC-FDMA symbols for PUSCH 906 for the same transport block x,N^(PUSCH-initial) _(symbol).

In FIG. 10, in a case that PUSCH 902 based on PDCCH 900 is performed,the number of coded bits Q of the CQI/PMI, the number of coded bits G ofthe RI, the number of coded bits H of the HARQ-ACK, and the transmitpower for PUSCH 910, P_(PUSCH,c) (i) may be the bandwidth scheduled forPUSCH 902, and be given at least based on M^(PUSCH-initial) _(sc)obtained from PDCCH 900 and the number of the SC-FDMA symbols for PUSCH902 for the same transport block x, N^(PUSCH-initial) _(symbol).

FIG. 11 is a diagram illustrating PUSCH initial transmission and thethird example of initial PDCCH according to the present embodiment. Theterminal apparatus 1 receives PDCCH 1000 including an uplink grantindicating initial transmission. PDCCH 1000 is also referred to asinitial PDCCH 1000. However, the terminal apparatus 1 does not transmitPUSCH 1002 corresponding to PDCCH 1000. Here, PUSCH 1002 is alsoreferred to as initial transmission PUSCH 1002.

For example, in a case that multiple PUSCHs including PUSCH 1002 areassigned in a certain subframe, and the total of the estimated transmitpower of the multiple PUSCH transmissions exceeds the largest transmitpower configured, the terminal apparatus 1 may set the transmit powerfor PUSCH 1002 to be 0, or may drop PUSCH 1002. For example, theterminal apparatus 1 may drop PUSCH 1002 in a case that a result of LBT(Listen Before Talk) corresponding to PUSCH 1002 is in a busy state.

The procedure of LBT is defined as the mechanism by which the terminalapparatus 1 applies a Clear Channel Assessment (CCA) check before thetransmission in the serving cell. The terminal apparatus 1 performspower detection or signal detection to determine the presence or absenceof other signals in the serving cell in order to identify whether theserving cell is in an idle state or in the busy state. The CCA is alsoreferred to as a carrier sense. The terminal apparatus 1 performsmeasurement (detection) of interference power (interference signal,reception power, receiving signal, noise power, noise signal) and thelike in the serving cell, before transmitting a physical channel and aphysical signal using the serving cell (component carrier, channel,medium, frequency). The terminal apparatus 1 identifies (detects,assumes, determines) whether the serving cell is in the idle state or inthe busy state, based on the measurement (the detection). In a case thatthe terminal apparatus 1 identifies that the serving cell is in the idlestate, based on the measurement (the detection), the radio transmissionand/or reception apparatus can transmit the physical channel and thephysical signal in the serving cell. In a case that the serving cell isidentified in the busy state based on the terminal apparatus 1, theradio transmission and/or reception apparatus does not transmit thephysical channel and the physical signal in the serving cell.

In the procedure of LBT, the serving cell being in the busy state maymean that the interference power (or the mean of the interference power,the mean of the interference power in time and/or the frequency)detected in the prescribed radio resources of the serving cell exceeds(or is equal to or larger than) the threshold of LBT (or the thresholdof the carrier sense, the threshold of the CCA, the threshold of theenergy detection). The serving cell being in the idle state may mean theinterference power detected in the prescribed radio resources of theserving cell does not exceed (or is equal to or smaller than) thethreshold of LBT. Here, the prescribed radio resources may be givenbased on a prescribed time and a prescribed frequency. For example, theprescribed time may be 4 microseconds. The prescribed time may be 25microseconds. The prescribed time may be 36 microseconds. The prescribedtime may be 45 microseconds. The prescribed time may be defined as thesmallest period used for the measurement of the reception power. Theprescribed time may be given based on information included in the higherlayer signaling transmitted by the base station apparatus 3 and/orinformation included in the DCI transmitted by the base stationapparatus 3. The prescribed time may be given based on a counter (or aback off counter). The maximum of the counter is given by the maximumcontention window (CW_(max)). The minimum of the counter is given by theminimum contention window (CW_(min)). The prescribed frequency may begiven based on the band of the serving cell. The prescribed frequencymay be given as a part of the band of the serving cell. The prescribedfrequency may be given based on scheduling information included in theDCI transmitted by the base station apparatus 3.

A specific calculation method of the number of SC-FDMA symbols includedin the PUSCH will be described below. Here, the SC-FDMA symbols includedin the PUSCH may be the number of the SC-FDMA symbols used forgeneration of time continuous signals generated based on the contents ofresource elements of the PUSCH.

The number of the SC-FDMA symbols included in the PUSCH transmitted bythe terminal apparatus 1 may be given based on the procedure of LBT. Forexample, the number of the SC-FDMA symbols included in the PUSCHtransmitted by the terminal apparatus 1 may be given based onconfiguration of the prescribed period for LBT (the prescribed periodfor LBT is also referred to as a LBT period).

In the transmission of the PUSCH scheduled by the base station apparatus3, the LBT period for the PUSCH may be included in the transmissionperiod of the PUSCH. Here, the LBT period being included in thetransmission period of the PUSCH may mean that the LBT period or atleast a part of the LBT period is included in a period configured forthe PUSCH (1 ms period). The transmission period of the PUSCH may be thesubframe where the transmission of the PUSCH is configured.

In the transmission of the PUSCH scheduled by the base station apparatus3, the number of the SC-FDMA symbols included in the PUSCH transmittedby the terminal apparatus 1 may be given based on the configuration ofthe LBT period for the PUSCH. For example, in the transmission of thePUSCH scheduled by the base station apparatus 3, the number of theSC-FDMA symbols included in the PUSCH transmitted by the terminalapparatus 1 is given based on Equation (8) in a case that the LBT periodand the transmission of the PUSCH are not configured in the samesubframe.

N _(symb) ^(PUSCH-initial)=(2·(N _(symb) ^(UL)−1)−N _(SRS))  Equation(8)

Here, N^(UL) _(symb) is the number of the SC-FDMA symbols included in 1slot. N_(SRS) may be the number of the SC-FDMA symbols used for SoundingReference Symbol (SRS) included in 1 subframe where the transmission ofthe PUSCH is configured. Here, the terminal apparatus 1 may trigger thetransmission of the SRS periodically or by information/parameterreceived from the base station apparatus 3. The SRS is used for estimateof the channel in the uplink and the like. N_(SRS) may be the number ofthe symbols used for SRS triggered periodically or byinformation/parameter received from the base station apparatus 3. It maybe N_(SRS)=1 in a case that the transmission of the SRS is triggered,and N_(SRS)=0 in a case that the transmission of the SRS is nottriggered. N_(SRS) may be given by information/parameter received fromthe base station apparatus 3. N_(SRS) may be given by informationindicating the transmission Ending symbol included in DCI and used forscheduling the PUSCH (or subframe).

For example, in the transmission of the PUSCH scheduled by the basestation apparatus 3, the number of the SC-FDMA symbols included in thePUSCH transmitted by the terminal apparatus 1 may be given based onEquation (9) in a case that the LBT period and the transmission of thePUSCH are configured in the same subframe.

N _(symb) ^(PUSCH-initial)=(2·(N _(symb) ^(UL)−1)−N _(SRS) −N_(LBT))  Equation (9)

Here, N_(LBT) may be the number of the SC-FDMA symbols corresponding tothe contents of the resource elements which are not used for thegeneration of the time continuous signal. N_(LBT) may be the number ofthe SC-FDMA symbols corresponding to the contents of the resourceelements which are not used for the generation of the time continuoussignal, due to the LBT period being configured. In the transmission ofthe PUSCH scheduled by the base station apparatus 3, it may be N_(LBT)=1in a case that the LBT period and the transmission of the PUSCH areconfigured in the same subframe. In the transmission of the PUSCHscheduled by the base station apparatus 3, it may be N_(LBT)=1 in a casethat the LBT period and the transmission of the PUSCH are configured inthe same subframe, and the number of the SC-FDMA symbols correspondingto the contents of the resource elements which are not used for thegeneration of the time continuous signal is 1. In a case that the LBTperiod and the transmission of the PUSCH are not configured in the samesubframe, the number of the SC-FDMA symbols of the PUSCH transmitted bythe terminal apparatus 1 may be given based on Equation (9). In thetransmission of the PUSCH scheduled by the base station apparatus 3, itmay be N_(LBT)=0 in a case that the LBT period and the transmission ofthe PUSCH are not configured in the same subframe. In the transmissionof the PUSCH scheduled by the base station apparatus 3, it may beN_(LBT)=0 in a case that the LBT period and the transmission of thePUSCH are not configured in the same subframe, and the number of theSC-FDMA symbols corresponding to the contents of the resource elementswhich are not used for the generation of the time continuous signal is0. In the transmission of the PUSCH scheduled by the base stationapparatus 3, it may be N_(LBT)=X in a case that the LBT period and thetransmission of the PUSCH are configured in the same subframe, and thenumber of the SC-FDMA symbols corresponding to the contents of theresource elements which are not used for the generation of the timecontinuous signal is X. Here, X is a fixed number.

FIG. 12 is a diagram illustrating an example in which the LBT period isincluded in the period where the time continuous signal generated basedon SC-FDMA symbol #0 (grid pattern) is transmitted (the period givenbased on the range of the time t in Equation (2)). As illustrated inFIG. 12, the LBT period may not be equal to the length of the periodwhere the time continuous signal generated based on the SC-FDMA symbolis transmitted. For example, in an example illustrated in FIG. 12, thetime continuous signal generated based on SC-FDMA symbol #1 istransmitted through the period A after the LBT period. Note that the sumof the LBT period and the period A may be equal to the length of theperiod where the time continuous signal generated based on the SC-FDMAsymbol is transmitted. Here, in the period A, in a case that thetransmission of the signal is not performed by the terminal apparatus 1,the channel after the period A may be reserved by a terminal apparatuswhich is not the terminal apparatus 1. Thus, the channel being reservedby multiple terminal apparatuses results in an element of transmissionperformance deterioration (a condition that multiple terminalapparatuses reserve a channel for LBT or CCA and performs transmissionis also referred to as a collision). Here, the period A is also referredto as a gap of LBT (LBT gap) or a gap of CCA (CCA gap), and the like.

Thus it is preferable that transmission of a signal (PUSCH or a signalexcept PUSCH) is performed by the terminal apparatus 1 during the periodA in FIG. 12 (also referred to as Channel reservation and the like). Inthe first operation of the period A according to one aspect of thepresent invention, the terminal apparatus 1 may transmit a dummy signalas a signal for channel reservation. A generation method of the dummysignal may be given based on the description of a specification and thelike. The dummy signal may be generated based on a reference signal. Thedummy signal being transmitted by the terminal apparatus 1 may be thatpower higher than a prescribed power is emitted outside the terminalapparatus 1. Here, the period A in FIG. 12 may correspond to thetransmission period of the time continuous signal of the first SC-FDMAsymbol.

On the other hand, the dummy signal transmitted by the terminalapparatus 1 is not used for calculation of transmission coding rate (orBit Per Resource Element (BPRE)) of the transport block included in thePUSCH. That is, it is preferable that the dummy signal is not consideredin calculation of the number of coded bits Q of the CQI/PMI, the numberof coded bits G of the RI, the number of coded bits H of the HARQ-ACK,and/or the transmit power of the PUSCH. Thus, it may be N_(LBT)=1 in acase that the dummy signal is transmitted by the terminal apparatus 1during the period A in FIG. 12. It may be N_(LBT)=X in a case that thedummy signal is transmitted in the X SC-FDMA symbols by the terminalapparatus 1.

That is, it may be N_(LBT)=1 in a case that the LBT period isconfigured, the time continuous signal generated based on the firstSC-FDMA symbol is not transmitted, and the dummy signal is transmittedduring at least a part of the LBT period. It may be N_(LBT)=0 in a casethat the time continuous signal generated based on the first SC-FDMAsymbol due to LBT period being configured is not transmitted, and thedummy signal is not transmitted in the LBT period. Here, the firstSC-FDMA symbol may be one or multiple SC-FDMA symbols. That is, it maybe N_(LBT)=X in a case that the first SC-FDMA symbol corresponds to theX SC-FDMA symbols, and the dummy signal is transmitted during at least apart of the LBT period. It may be N_(LBT)=0 in a case that the firstSC-FDMA symbol corresponds to the X SC-FDMA symbols, and the dummysignal is not transmitted during the LBT period.

In the first operation of the period A in FIG. 12 according to oneaspect of the present invention, the terminal apparatus 1 may transmit asignal where CP of SC-FDMA symbol #1 is extended (Extension of cyclicprefix of the next SC-FDMA symbol) (CP extended outside the SC-FDMAsymbol or extended CP). Here, the extended CP may not be used for thecalculation of the transmission coding rate of the transport blockincluded in the PUSCH. This results from that CP is used forinterference cancellation by multi-path fading particular to radiotransmission environment. That is, it is preferable that the transmitpower of the signal where CP of SC-FDMA symbol #1 is extended is notconsidered in the calculation of the number of coded bits Q of theCQI/PMI, the number of coded bits G of the RI, the number of coded bitsH of the HARQ-ACK, and/or the transmit power for the PUSCH. Thus, it maybe N_(LBT)=1 in a case that CP extended by the terminal apparatus 1 istransmitted during the period A in FIG. 12. It may be N_(LBT)=X in acase that extended CP is transmitted in the X SC-FDMA symbols by theterminal apparatus 1.

That is, it may be N_(LBT)=1 in a case that the first SC-FDMA symbol isnot transmitted due to the LBT period being configured, and the extendedCP of the second SC-FDMA symbol following the first SC-FDMA symbol istransmitted during at least a part of the period A in FIG. 12. It may beN_(LBT)=0. in a case that the first SC-FDMA symbol is not transmitteddue to the LBT period being configured, and the extended CP of thesecond SC-FDMA symbol following the first SC-FDMA symbol is nottransmitted during the period A in FIG. 12. Here, the first SC-FDMAsymbol may be multiple SC-FDMA symbols. That is, it may be N_(LBT)=X ina case that the first SC-FDMA symbol corresponds to the X SC-FDMAsymbols, and the extended CP of the second SC-FDMA symbol following thefirst SC-FDMA symbol is transmitted during at least a part of the periodA in FIG. 12. It may be N_(LBT)=0 in a case that the first SC-FDMAsymbol corresponds to the X SC-FDMA symbols, and the extended CP of thesecond SC-FDMA symbol following the first SC-FDMA symbol is nottransmitted during the period A in FIG. 12.

A specific example of the extended CP of the second SC-FDMA symboll_(second) following the first SC-FDMA symbol l will be described byusing an example in which the first SC-FDMA symbol is SC-FDMA symbol l,and the second SC-FDMA symbol is SC-FDMA symbol l_(second). The extendedCP of the second SC-FDMA symbol l_(second) following the first SC-FDMAsymbol l is also referred to as an extended CP below. The extended CP ofthe second SC-FDMA symbol following the first SC-FDMA symbol l may begiven by extending a normal CP corresponding to N_(CP,l)=144 orN_(CP,l)=160 or an extended CP corresponding to N_(CP,l)=512. Here, forexample, it may be l_(second)=l+1.

For example, the extended CP of the second SC-FDMA symbol l_(second)following the first SC-FDMA symbol l may be generated based on Equation(2). Here, N^(X) _(CP,l) used for the extended CP of the second SC-FDMAsymbol l_(second) following the first SC-FDMA symbol l may have a value(e.g., 320) except 160 in a case of l=0. N^(X) _(CP,l) used for theextended CP of the second SC-FDMA symbol l_(second) following the firstSC-FDMA symbol l may be a value (e.g., 288) except 144 in a case of l=1to 6. N^(X) _(CP,l) used for the extended CP of the second SC-FDMAsymbol l_(second) following the first SC-FDMA symbol l may be a value(e.g., 1024) except 512 in a case of l=0 to 6. Time T_(1,0) where thetransmission of the first SC-FDMA symbol l is started, used for theextended CP of the second SC-FDMA symbol l_(second) following the firstSC-FDMA symbol l, may be given based on LBT. For example, in a case thatthe LBT for the PUSCH including the first SC-FDMA symbol l finishes intime T_(LBT), time T_(1,0) where the transmission of the first SC-FDMAsymbol l is started, used for the extended CP of the second SC-FDMAsymbol l_(second) following the first SC-FDMA symbol l, may beT_(1,0)=T_(LBT)+T_(s)+T_(n). That is, in a case that the transmission ofthe extended CP of the second SC-FDMA symbol l_(second) following thefirst SC-FDMA symbol l is configured, the time continuous signal offirst SC-FDMA symbol l may be given based on the contents of theresource elements corresponding to the second SC-FDMA symbol l_(second).

N_(LBT) may be given based on whether the continuous time signal of thefirst SC-FDMA symbol l is generated based on the contents of theresource elements corresponding to the first SC-FDMA symbol. Forexample, it may be N_(LBT)=1 in a case that the time continuous signalof the first SC-FDMA symbol l is generated based on the contents of theresource elements corresponding to the first SC-FDMA symbol. It may beN_(LBT)=1 in a case that the time continuous signal of the first SC-FDMAsymbol l is generated based on the contents of the resource elementscorresponding to the second SC-FDMA symbol l_(second). It may beN_(LBT)=X in a case that the time continuous signals of the x firstSC-FDMA symbols l are generated based on the contents of the resourceelements corresponding to the second SC-FDMA symbol.

N_(LBT) may be given based on NULL (O_(m)) substituted for a modulationsymbol in Equation (1). For example, N_(LBT) may be given based on thenumber of NULLs substituted for a modulation symbol in Equation (1).N_(LBT) may be N_(LBT)=N_(NULL)/Nsc in a case that the number of NULLssubstituted for the modulation symbol in Equation (1) is N_(NULL) Here,N_(sc) is the number of subcarriers of the SC-FDMA symbol included inthe PUSCH scheduled by the base station apparatus 3. It may beN_(LBT)=N_(NULL)/Nsc in a case that the LBT period and the transmissionof the PUSCH are configured in the same subframe, in the transmission ofthe PUSCH scheduled by the base station apparatus 3, and N_(NULL) NULLsare substituted for the modulation symbol, in a modulation symbolgenerating the contents of the resource elements corresponding to the YSC-FDMA symbols included in the PUSCH. It may beN_(LBT)=X+N_(NULL)/(N_(sc)*Y) in a case that the LBT period and thetransmission of the PUSCH are configured in the same subframe, in thetransmission of the PUSCH scheduled by the base station apparatus 3, thetime continuous signal generated based on the X SC-FDMA symbols includedin the PUSCH is not transmitted, and N_(NULL) NULLs are substituted forthe modulation symbol, in a modulation symbol generating the contents ofthe resource elements corresponding to the Y SC-FDMA symbols included inthe PUSCH. Here, for example, it may be X=0 and Y=1. That is, it may beN_(LBT)=N_(NULL)/(N_(sc)*Y) in a case that the LBT period and thetransmission of the PUSCH are configured in the same subframe, in thetransmission of the PUSCH scheduled by the base station apparatus 3, andN_(NULL) NULLs are substituted for the modulation symbol, in amodulation symbol generating the contents of the resource elementscorresponding to the Y SC-FDMA symbols included in the PUSCH. Here, forexample, it may be Y=1.

In N_(LBT), the actual transmission period of the time continuous signalmay be different from the length of the time continuous signal generatedbased on the contents of the resource elements corresponding to theSC-FDMA symbol. Here, N_(LBT) may be given based on the transmissionperiod. Here, the transmission period T_(tx) may be given byT_(tx)=(N_(CP,l)+N)*T_(s)−T_(1,0). Here, the time continuous signal mayinclude a range from T_(1,0) to (N_(CP,l)+N)*T_(s). That is, thetransmission timing of the time continuous signal may be T_(1,0). Thetransmission period T_(tx) may be given based on the generated timesignal. For example, N_(LBT) may be given by N_(LBT)=T_(tx)/T_(symbol).Here, T_(symbol) may be the length of the generated time continuoussignal. For example, T_(symbol) may be given byT_(symbol)=(2,048+N_(CP,l))*T_(s).

The transmission timing of the time continuous signal T_(1,0) may begiven by T_(1,0)=T_(initial)+T_(n) in a case that the actualtransmission period of the time continuous signal is different from thelength of the time continuous signal generated based on the contents ofthe resource elements corresponding to the SC-FDMA symbol. Here,T_(initial) may be the time indicating the top (or the top samplingpoint) of the generated time continuous signal. T_(n) is a valueindicating a value of a positive or negative error of the transmissiontiming. The error of the transmission timing is an error brought by someof devices included in the terminal apparatus 1 and/or the base stationapparatus 3, such as synchronization error, transition time of thetransmission and/or reception, the clock error.

N_(LBT) may be given based on information included in the higher layersignaling transmitted by the base station apparatus 3 and/or informationincluded in the DCI transmitted by the base station apparatus 3. Forexample, X may be given based on information included in the higherlayer signaling transmitted by the base station apparatus 3 and/orinformation included in the DCI transmitted by the base stationapparatus 3. Y may be given based on information included in the higherlayer signaling transmitted by the base station apparatus 3 and/orinformation included in the DCI transmitted by the base stationapparatus 3. The number of NULLs N_(NULL) substituted for a modulationsymbol may be given based on information included in the higher layersignaling transmitted by the base station apparatus 3 and/or informationincluded in the DCI transmitted by the base station apparatus 3.Information included in the higher layer signaling transmitted by thebase station apparatus 3, and/or information included in the DCItransmitted by the base station apparatus 3 may be informationindicating that some SC-FDMA symbols included in the PUSCH are nottransmitted.

A symbol being transmitted by the terminal apparatus 1 may mean that theterminal apparatus 1 emits power that exceeds (or is equal to or largerthan) a prescribed power (or mean power, power density, power strength,electric field strength, electric wave strength, electric field density,electric wave density, and the like) outside the terminal apparatus 1 ina prescribed time and a prescribed frequency corresponding to the PUSCH.Specifically, the symbol being transmitted by the terminal apparatus 1may mean that power in a prescribed time and a prescribed frequencycorresponding to the radio resources for the symbol is higher thanemitted power other than the prescribed time and/or frequency other thanthe prescribed frequency. Here, the prescribed power may be −39 dBm. Theprescribed power may be −30 dBm. The prescribed power may be −72 dBm. Inone aspect of the present invention, the prescribed power is notlimited.

The drop process of PUSCH 1002 may be performed by radio transmissionand/or reception unit 10. In a case that the transmission of PUSCH 1002is dropped by the radio transmission and/or reception unit 10, thehigher layer processing unit 14 may consider that the transmission ofPUSCH 1002 was performed. For example, the higher layer processing unit14 may generate a transport block x for the transmission of PUSCH 1002.For example, it retains an uplink grant included in PDCCH 1000 and maydirect the radio transmission and/or reception unit 10 forretransmission of the transport block x based on the retained uplinkgrant.

The terminal apparatus 1 receives PDCCH 1004 including an uplink grantindicating retransmission. The terminal apparatus 1 performs PUSCH 1006including the transport block x, based on detection of PDCCH 1004. PUSCH1006 is also referred to as retransmission PUSCH 1006. PUSCH 1006corresponds to retransmission of PUSCH 1002.

The terminal apparatus 1 receives PDCCH 1008 including an uplink grantindicating retransmission. Here, the CSI request field included in theuplink grant of PDCCH 1008 may be set to trigger CSI reporting. TheHARQ-ACK request field included in the uplink grant of PDCCH 1008 may beset to trigger HARQ-ACK transmission. The terminal apparatus 1 transmitsPUSCH 1010 including the UCI (the CQI/PMI, the RI, and/or the HARQ-ACK)and the transport block x, based on detection of PDCCH 1008. PUSCH 1010is also referred to as retransmission PUSCH 1010. PUSCH 1010 correspondsto retransmission of PUSCH 1002 and/or PUSCH 1006. Here, PDCCH 1000,1004, 1008, and PUSCH 1002, PUSCH 1006, 1010 correspond to the same HARQprocess.

In FIG. 11, the number of coded bits Q of the CQI/PMI, the number ofcoded bits G of the RI, the number of coded bits H of the HARQ-ACK, andthe transmit power for PUSCH 1010, P_(PUSCH,c) (i) may be the bandwidthscheduled for PUSCH 1002, and be given at least based onM^(PUSCH-initial) _(sc) obtained from PDCCH 1000 and the number of theSC-FDMA symbols for PUSCH 1002 for the same transport block x,N^(PUSCH-initial) _(symbol).

However, the base station apparatus 3 cannot know whether the reason whyPUSCH 1002 was not performed is because (i) the terminal apparatus 1failed in the detection of initial PDCCH 1000, (ii) the result of LBT isa busy state, or (iii) the total of the estimated transmit powers ofmultiple PUSCH transmissions including PUSCH 1002 exceeds the maximumtransmit power configured. Thus, it is not preferable for the number ofcoded bits Q of the CQI/PMI, the number of coded bits G of the RI, thenumber of coded bits H of the HARQ-ACK, and the transmit power for PUSCH1006, P_(PUSCH,c) (i) to vary depending on the reason why thetransmission of PUSCH 1002 was not performed. Thus, in FIG. 11, even ifthe detection of PDCCH 1000 was successfully completed, in a case thattransmission of PUSCH 1002 based on PDCCH 1000 is not performed, thenumber of coded bits Q of the CQI/PMI, the number of coded bits G of theRI, the number of coded bits H of the HARQ-ACK, and the transmit powerfor PUSCH 1010, P_(PUSCH,c) (i) may be the bandwidth scheduled for PUSCH1006, and be given at least based on M^(PUSCH-initial) _(sc) obtainedfrom PDCCH 1004 and the number of the SC-FDMA symbols for PUSCH 1006 forthe same transport block x, N^(PUSCH-initial) _(symbol). Thereby, thebase station apparatus 3 can correctly receive PUSCH 1006 (the UCI andthe transport block) even if it does not know the reason why thetransmission of PUSCH 1002 was not performed by the terminal apparatus1. Here, in a case that the reason why PUSCH 1002 was not performed isbecause (ii) the result of the LBT is a busy state, PUSCH 1006 is alsoreferred to as a PUSCH initial transmission. That is, in a case that thereason why PUSCH 1002 was not performed is because (ii) the result ofthe LBT is a busy state, PDCCH 1004 may be an initial PDCCH.

In FIG. 11, in a case that transmission of PUSCH 1002 based on PDCCH1000 is performed, the number of coded bits Q of the CQI/PMI, the numberof coded bits G of the RI, the number of coded bits H of the HARQ-ACK,and the transmit power for PUSCH 1010, P_(PUSCH,c) (i) may be thebandwidth scheduled for PUSCH 1002, and be given at least based onM^(PUSCH-initial) _(sc) obtained from PDCCH 1000 and the number of theSC-FDMA symbols for PUSCH 1002 for the same transport block x,N^(PUSCH-initial) _(symbol).

Some or all of the following element A to element I may be given atleast based on the number of SC-FDMA symbols included in the PUSCH. Someor all of the following element A to element I may be given based on thegeneration method of the time continuous signal generated based on thecontents of the resource elements corresponding to the SC-FDMA symbolincluded in the PUSCH. Some or all of the following element A to elementI may be given based on the number of NULLs inserted into a modulationsymbol generating the contents of the resource elements used for thegeneration of the SC-FDMA symbol included in the PUSCH. Some or all ofthe following element A to element I may be given based on thetransmission period in a case that the actual transmission period of thetime continuous signal is different from the length of the timecontinuous signal generated based on the contents of the resourceelements corresponding to the SC-FDMA symbol.

Element A: the number of coded bits Q of the CQI/PMI transmitted on thePUSCH

Element B: the number of coded bits G of the RI transmitted on the PUSCH

Element C: the number of coded bits H of the HARQ-ACK transmitted on thePUSCH

Element D: the transmit power for PUSCH 802, P_(PUSCH,c) (i)

Element E: the transmit power for PUSCH 806, P_(PUSCH,c) (i)

Element F: the transmit power for PUSCH 906, P_(PUSCH,c) (i)

Element G: the transmit power for PUSCH 910, P_(PUSCH,c) (i)

Element H: the transmit power for PUSCH 1006, P_(PUSCH,c) (i)

Element I: the transmit power for PUSCH 1010, P_(PUSCH,c) (i)

Here, the number of SC-FDMA symbols of the PUSCH may be given based onthe configuration of the LBT period. For example, the number of SC-FDMAsymbols of the PUSCH may be given based on whether the transmission ofthe PUSCH and the LBT period are configured in the same subframe. Forexample, the number of SC-FDMA symbols of the PUSCH may be given basedon the number of the SC-FDMA symbols N_(LBT) of the PUSCH which is nottransmitted due to the LBT period being configured. For example, thenumber of SC-FDMA symbols N_(LBT) of the PUSCH which is not transmitteddue to the LBT period being configured may be 1 in a case that thetransmission of the PUSCH and the LBT period are configured in the samesubframe. The number of SC-FDMA symbols N_(LBT) of the PUSCH which isnot transmitted due to the LBT period being configured may be 0 in acase that the transmission of the PUSCH and the LBT period are notconfigured in the same subframe.

Hereinafter, various aspects of the terminal apparatus 1 and the basestation apparatus 3 according to the present embodiment will bedescribed.

(1) According to some aspects of the present invention, the followingmeasures are provided. Specifically, the first aspect of the presentinvention is a terminal apparatus 1 including: a transmittertransmitting a PUSCH (802, 806, 902, 906, 9010, 1002, 1006, 1010) basedon LBT of a prescribed period; and a physical layer processing unitcalculating a number of bits of an uplink control information includedin the PUSCH (802, 806, 902, 906, 9010, 1002, 1006, 1010), wherein: thenumber of bits of the uplink control information is given at least basedon some or all of a first element, a second element, a third element, afourth element, and a fifth element; the first element is the number ofSC-FDMA symbols included in the PUSCH (802, 806, 902, 906, 9010, 1002,1006, 1010); the second element is whether a time continuous signal of afirst SC-FDMA symbol included in the SC-FDMA symbol is generated basedon a content of a resource element corresponding to the first SC-FDMAsymbol; the third element is a number of NULL inserted into a modulationsymbol generating the contents; the fourth element is a transmissionperiod of the time continuous signal; and the fifth element is whethertransmission of the PUSCH (802, 806, 902, 906, 9010, 1002, 1006, 1010)and the prescribed period are configured in the same subframe.

(2) The second aspect of the present invention is a base stationapparatus 3 including: a physical layer processing unit calculating anumber of bits of uplink control information included in PUSCH (802,806, 902, 906, 9010, 1002, 1006, 1010); and a receiver receiving thePUSCH (802, 806, 902, 906, 9010, 1002, 1006, 1010) based on a number ofbits of the uplink control information calculated by the physical layerprocessing unit, wherein: the number of bits of the uplink controlinformation is given at least based on some or all of a first element, asecond element, a third element, a fourth element, and a fifth element;the first element is the number of SC-FDMA symbols included in the PUSCH(802, 806, 902, 906, 9010, 1002, 1006, 1010); the second element iswhether a time continuous signal of a first SC-FDMA symbol included inthe SC-FDMA symbol is generated based on a content of a resource elementcorresponding to the first SC-FDMA symbol; the third element is a numberof NULL inserted into a modulation symbol generating the contents; thefourth element is a transmission period of the time continuous signal;and the fifth element is whether transmission of the PUSCH (802, 806,902, 906, 9010, 1002, 1006, 1010) and the prescribed period areconfigured in the same subframe.

(3) The third aspect of the present invention is a terminal apparatus 1including: a transmitter transmitting a PUSCH (802, 806, 902, 906, 9010,1002, 1006, 1010) based on LBT of a prescribed period; and a physicallayer processing unit calculating transmit power of the PUSCH (802, 806,902, 906, 9010, 1002, 1006, 1010), wherein: the transmit power is givenat least based on some or all of a first element, a second element, athird element, a fourth element, and a fifth element; the first elementis the number of SC-FDMA symbols included in the PUSCH (802, 806, 902,906, 9010, 1002, 1006, 1010); the second element is whether a timecontinuous signal of a first SC-FDMA symbol included in the SC-FDMAsymbol is generated based on a content of a resource elementcorresponding to the first SC-FDMA symbol; the third element is a numberof NULL inserted into a modulation symbol generating the contents; thefourth element is a transmission period of the time continuous signal;and the fifth element is whether transmission of the PUSCH (802, 806,902, 906, 9010, 1002, 1006, 1010) and the prescribed period areconfigured in the same subframe.

(4) The fourth aspect of the present invention is a base stationapparatus 3 including: a physical layer processing unit calculatingtransmit power of a PUSCH (802, 806, 902, 906, 9010, 1002, 1006, 1010);and a receiver receiving the PUSCH (802, 806, 902, 906, 9010, 1002,1006, 1010) based on the transmit power calculated by the physical layerprocessing unit, wherein: the transmit power is given at least based onsome or all of a first element, a second element, a third element, afourth element, and a fifth element; the first element is the number ofSC-FDMA symbols included in the PUSCH (802, 806, 902, 906, 9010, 1002,1006, 1010); the second element is whether a time continuous signal of afirst SC-FDMA symbol included in the SC-FDMA symbol is generated basedon a content of a resource element corresponding to the first SC-FDMAsymbol; the third element is a number of NULL inserted into a modulationsymbol generating the contents; the fourth element is a transmissionperiod of the time continuous signal; and the fifth element is whethertransmission of the PUSCH (802, 806, 902, 906, 9010, 1002, 1006, 1010)and the prescribed period are configured in the same subframe.

(5) In the first to fourth aspects of the present embodiment, acontinuous signal of the first SC-FDMA symbol is an extended CP of thesecond SC-FDMA symbol in a case that a time continuous signal of thefirst SC-FDMA symbol is generated based on contents of resource elementscorresponding to a second SC-FDMA symbol following the first SC-FDMAsymbol.

(1A) One aspect of the present invention is a terminal apparatusincluding: a transmitter configured to transmit a transport block onPUSCH; and a physical layer processing unit configured to calculatetransmit power of the PUSCH, at least based on a number of SC-FDMAsymbols N^(PUSCH-initial) _(symb) for PUSCH initial transmission for thetransport block, wherein the number of the SC-FDMA symbolsN^(PUSCH-initial) _(symb) is given at least based on N_(LBT) and anumber of SC-FDMA symbols N^(UL) _(symb) included in an uplink slot, anda value of N_(LBT) is 1 in a case that a time continuous signal of afirst SC-FDMA symbol included in the PUSCH is generated based on acontent of a resource element corresponding to a second SC-FDMA symbolfollowing the first SC-FDMA symbol.

(2A) One aspect of the present invention is a base station apparatusincluding: a receiver configured to receive a transport blocktransmitted on PUSCH; and a physical layer processing unit configured tocalculate transmit power of the PUSCH, at least based on a number ofSC-FDMA symbols N^(PUSCH-initial) _(symb) for PUSCH initial transmissionfor the transport block, wherein the number of the SC-FDMA symbolsN^(PUSCH-initial) _(symb) is given at least based on N_(LBT) and anumber of SC-FDMA symbols N^(UL) _(symb) included in an uplink slot, anda value of N_(LBT) is 1 in a case that a time continuous signal of afirst SC-FDMA symbol included in the PUSCH is generated based on acontent of a resource element corresponding to a second SC-FDMA symbolfollowing the first SC-FDMA symbol.

(3A) One aspect of the present invention is a communication method usedfor a terminal apparatus, the communication method including the stepsof: transmitting a transport block on PUSCH; and calculating transmitpower of the PUSCH, at least based on a number of SC-FDMA symbolsN^(PUSCH-initial) _(symb) for PUSCH initial transmission for thetransport block, wherein the number of the SC-FDMA symbolsN^(PUSCH-initial) _(symb) is given at least based on N_(LBT) and anumber of SC-FDMA symbols N^(UL) _(symb) included in an uplink slot, anda value of N_(LBT) is 1 in a case that a time continuous signal of afirst SC-FDMA symbol included in the PUSCH is generated based on acontent of a resource element corresponding to a second SC-FDMA symbolfollowing the first SC-FDMA symbol.

(4A) One aspect of the present invention is a communication method usedfor a base station apparatus, the communication method including thesteps of: receiving a transport block transmitted on PUSCH; andcalculating transmit power of the PUSCH, at least based on a number ofSC-FDMA symbols N^(PUSCH-initial) _(symb) for PUSCH initial transmissionfor the transport block, wherein the number of the SC-FDMA symbolsN^(PUSCH-initial) _(symb) is given at least based on N_(LBT) and anumber of SC-FDMA symbols N^(UL) _(symb) included in an uplink slot, anda value of N_(LBT) is 1 in a case that a time continuous signal of afirst SC-FDMA symbol included in the PUSCH is generated based on acontent of a resource element corresponding to a second SC-FDMA symbolfollowing the first SC-FDMA symbol.

(5A) In one aspect of the present invention, a value of N_(LBT) is 0 ina case that the time continuous signal of the first SC-FDMA symbolincluded in the PUSCH is not based on the contents of the resourceelement corresponding to the second SC-FDMA symbol following the firstSC-FDMA symbol.

With any of the configurations or methods, the terminal apparatus 1 canefficiently perform the uplink transmission. The base station apparatus3 can efficiently receive the uplink transmission.

A program running on a base station apparatus 3 and a program running ona terminal apparatus 1 according to one aspect of the present inventionmay be a program that controls a Central Processing Unit (CPU) and thelike, such that the program causes a computer to operate in such amanner as to realize the functions of the above-described embodimentaccording to one aspect of the present invention. The informationhandled in these devices is temporarily stored in a Random Access Memory(RAM) while being processed. Thereafter, the information is stored invarious types of Read Only Memory (ROM) such as a flash ROM and a HardDisk Drive (HDD), and when necessary, read by the CPU to be modified orrewritten.

Note that the terminal apparatus 1 and the base station apparatus 3according to the above-described embodiment may be partially achieved bya computer. In that case, this configuration may be realized byrecording a program for realizing such control functions on acomputer-readable recording medium and causing a computer system to readthe program recorded on the recording medium for execution.

Note that it is assumed that the “computer system” mentioned here refersto a computer system built into the terminal apparatus 1 or the basestation apparatus 3, and the computer system includes an OS and hardwarecomponents such as a peripheral apparatus. Furthermore, the“computer-readable recording medium” refers to a portable medium such asa flexible disk, a magneto-optical disk, a ROM, a CD-ROM, and the like,and a storage apparatus such as a hard disk built into the computersystem.

Moreover, the “computer-readable recording medium” may include a mediumthat dynamically retains a program for a short period of time, such as acommunication line that is used to transmit the program over a networksuch as the Internet or over a communication line such as a telephoneline, and may also include a medium that retains a program for a fixedperiod of time, such as a volatile memory within the computer system forfunctioning as a server or a client in such a case. Furthermore, theprogram may be configured to realize some of the functions describedabove, and also may be configured to be capable of realizing thefunctions described above in combination with a program already recordedin the computer system.

Furthermore, the base station apparatus 3 according to theabove-described embodiment can be realized as an aggregation (a devicegroup) constituted of multiple devices. Each of the apparatusesconfiguring such an apparatus group may include some or all portions ofeach function or each functional block of the base station apparatus 3according to the above-described embodiment. The apparatus group mayinclude each general function or each functional block of the basestation apparatus 3. Furthermore, the terminal apparatus 1 according tothe above-described embodiment can also communicate with the basestation apparatus as the aggregation.

Furthermore, the base station apparatus 3 according to theabove-described embodiment may be an Evolved Universal Terrestrial RadioAccess Network (EUTRAN). Furthermore, the base station apparatus 3according to the above-described embodiment may have some or allportions of the functions of a node higher than an eNodeB.

Furthermore, some or all portions of each of the terminal apparatus 1and the base station apparatus 3 according to the above-describedembodiment may be typically achieved as an LSI which is an integratedcircuit or may be achieved as a chip set. The functional blocks of eachof the terminal apparatus 1 and the base station apparatus 3 may beindividually achieved as a chip, or some or all of the functional blocksmay be integrated into a chip. Furthermore, a circuit integrationtechnique is not limited to the LSI, and may be realized with adedicated circuit or a general-purpose processor. Furthermore, in a casewhere with advances in semiconductor technology, a circuit integrationtechnology with which an LSI is replaced appears, it is also possible touse an integrated circuit based on the technology.

Furthermore, according to the above-described embodiment, the terminalapparatus has been described as an example of a communication apparatus,but the present invention is not limited to such a terminal apparatus,and is applicable to a terminal apparatus or a communication apparatusof a fixed-type or a stationary-type electronic apparatus installedindoors or outdoors, for example, such as an Audio-Video (AV) apparatus,a kitchen apparatus, a cleaning or washing machine, an air-conditioningapparatus, office equipment, a vending machine, and other householdapparatuses.

The embodiments of the present invention have been described in detailabove referring to the drawings, but the specific configuration is notlimited to the embodiments and includes, for example, an amendment to adesign that falls within the scope that does not depart from the gist ofthe present invention. Furthermore, various modifications are possiblewithin the scope of one aspect of the present invention defined byclaims, and embodiments that are made by suitably combining technicalmeans disclosed according to the different embodiments are also includedin the technical scope of the present invention. Furthermore, aconfiguration in which constituent elements, described in the respectiveembodiments and having mutually the same effects, are substituted forone another is also included in the technical scope of the presentinvention.

INDUSTRIAL APPLICABILITY

One aspect of the present invention can be utilized in, for example, acommunication system, a communications apparatus (e.g., a mobileapparatus, a base station apparatus, a wireless LAN device, or a sensordevice), an integrated circuit (e.g., a communication chip), or program.

REFERENCE SIGNS LIST

-   1 (1A, 1B, 1C) Terminal apparatus-   3 Base station apparatus-   10 Radio transmission and/or reception unit-   11 Antenna unit-   12 RF unit-   13 Baseband unit-   14 Higher layer processing unit-   15 Medium access control layer processing unit-   16 Radio resource control layer processing unit-   30 Radio transmission and/or reception unit-   31 Antenna unit-   32 RF unit-   33 Baseband unit-   34 Higher layer processing unit-   35 Medium access control layer processing unit-   36 Radio resource control layer processing unit-   3000 Transmission process-   3001 Coding-   3002 Scrambling-   3003 Modulation mapper-   3004 Layer mapper-   3005 Transform precoder-   3006 Precoder-   3007 Resource element mapper-   3008 Baseband signal generation-   800, 804, 900, 904, 908, 1000, 1004, 1008 PDCCH-   802, 806, 902, 906, 9010, 1002, 1006, 1010 PUSCH

1-12. (canceled)
 13. A terminal apparatus comprising: transmissioncircuitry configured to and/or programmed to transmit a transport blockon a PUSCH, and physical layer processing circuitry configured to and/orprogrammed to determine transmit power for the PUSCH at least based on anumber of SC-FDMA symbols N^(PUSCH-initial) _(symb) for an initialtransmission of the PUSCH for the transport block, wherein the number ofthe SC-FDMA symbols N^(PUSCH-initial) _(symb) is given based on N_(LBT)and a number of SC-FDMA symbols included in a uplink slot N^(UL)_(symb), and the N_(LBT) is 1 in a case that a signal of a SC-FDMAsymbol with index I is generated based on a content for resourceelements corresponding to a SC-FDMA symbol with index I+1.
 14. Theterminal apparatus according to claim 13, wherein the N_(LBT) is 0 in acase that a signal of a SC-FDMA symbol with index I is not generatedbased on a content for resource elements corresponding to a SC-FDMAsymbol with index I+1.
 15. A base station apparatus comprising:reception circuitry configured to and/or programmed to receive atransport block on a PUSCH, and physical layer processing circuitryconfigured to and/or programmed to determine transmit power for thePUSCH at least based on a number of SC-FDMA symbols N^(PUSCH-initial)_(symb) for an initial transmission of the PUSCH for the transportblock, wherein the number of the SC-FDMA symbols N^(PUSCH-initial)_(symb) is given based on N_(LBT) and a number of SC-FDMA symbolsincluded in a uplink slot N^(UL) _(symb), and the N_(LBT) is 1 in a casethat a signal of a SC-FDMA symbol with index I is generated based on acontent for resource elements corresponding to a SC-FDMA symbol withindex I+1.
 16. The base station apparatus according to claim 15, whereinthe N_(LBT) is 0 in a case that a signal of a SC-FDMA symbol with indexI is not generated based on a content for resource elementscorresponding to a SC-FDMA symbol with index I+1.
 17. A communicationmethod used for a terminal apparatus, comprising: transmitting atransport block on a PUSCH, and determining transmit power for the PUSCHat least based on a number of SC-FDMA symbols N^(PUSCH-initial) _(symb)for an initial transmission of the PUSCH for the transport block,wherein the number of the SC-FDMA symbols N^(PUSCH-initial) _(symb) isgiven based on N_(LBT) and a number of SC-FDMA symbols included in auplink slot N^(UL) _(symb), and the N_(LBT) is 1 in a case that a signalof a SC-FDMA symbol with index I is generated based on a content forresource elements corresponding to a SC-FDMA symbol with index I+1. 18.A communication method used for a base station apparatus, comprising:receiving a transport block on a PUSCH, and determining transmit powerfor the PUSCH at least based on a number of SC-FDMA symbolsN^(PUSCH-initial) _(symb) for an initial transmission of the PUSCH forthe transport block, wherein the number of the SC-FDMA symbolsN^(PUSCH-initial) _(symb) is given based on N_(LBT) and a number ofSC-FDMA symbols included in a uplink slot N^(UL) _(symb), and theN_(LBT) is 1 in a case that a signal of a SC-FDMA symbol with index I isgenerated based on a content for resource elements corresponding to aSC-FDMA symbol with index I+1.